Chinese vaccine CoronaVac efficacy at 50%-90% in Brazilian trials: Official

Results of trials in Brazil are known exclusively by Sao Paulo state’s Butantan Institute biomedical research center, which has an agreement with Sinovac to produce the vaccine, said health secretary Jean Gorinchteyn.

from Hindustan Times - world https://bit.ly/3hiH1xM
https://ift.tt/2zbki14